A programmer's guide to ADO. NET in C# by Mahesh Chand

By Mahesh Chand

A Programmer's advisor to ADO.NET in C# starts by means of taking readers via a fast moving evaluation of C# after which delves into ADO.NET. Why may still C# programmers use it rather than the present applied sciences? What new performance does it supply? The chapters that persist with wade through the main points on all the significant information companies of the .NET platform (OleDb, SQL Server, and ODBC) that show you how to learn and write information to the unique database. those chapters additionally function a superb reference for having a look up unique equipment and houses for those facts supplier periods. Authors Chand and Gold additionally exhibit C# programmers the right way to paintings with XML periods and the way to combine XML into the ADO.NET architecture.
The e-book offers programmers with convenient principles approximately benefiting from the VS.NET IDE and the way you could tie your information to the myriad of strong controls together with the multi-faceted information Grid. eventually, it is going via making a visitor e-book software for the internet so that you can see how everything healthy jointly.

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NET It looks like the wizard did a lot of the work for you! Step 6: Filling the DataGrid Control with Data Until now, you didn’t have to write a single line of code. Now, though, you’ll add a few lines of code and then you’ll be all set to see the data from your data source. First, you’ll create a method, FillDBGrid, which fills a DataSet object. Then you’ll read data from a DataSet object and populate the DataGrid control. The Fill method of SqlDataAdapter fills data from a data adapter to the DataSet.

Creating a Select statement through the Data Adapter Configuration Wizard Query Builder The Query Builder option lets you pick tables from your data source. First, select the Employees table to read in the Employee data. You actually have the option of selecting as many tables as you want, but for now select only one table (see Figure 4-23) and click the Add button. NET Figure 4-23. The Query Builder If you’ve ever used Microsoft Access, you’ll find that the Query Builder is similar to it. In Access, you can create queries by dragging tables and their columns to the grid (or checking the columns), and the Query Builder builds a SQL query for your action.

NET Figure 4-41. Generating the SQL statements in the Data Adapter Configuration Wizard Clicking on the Advanced Options button brings up the Advanced SQL Generation Options dialog box, as shown in Figure 4-42. Figure 4-42. Advanced options in the Data Adapter Configuration Wizard 195 933ch4 3/20/02 11:03 AM Page 196 Chapter 4 In this dialog box you can opt not to generate INSERT, UPDATE, or DELETE statements by turning off the first option. This is useful if you’re planning on only reading the database and don’t want all this extraneous code generated.

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